Distributed parachute system

ABSTRACT

A distributed parachute system is disclosed. In various embodiments, a parachute is at least partially deployed along one or more dimensions. A deployment mechanism configured to deploy the parachute is provided. The distributed parachute system is configured to be deployed in an aircraft that comprises a channel oriented along the one or more dimensions

BACKGROUND OF THE INVENTION

The time between when an emergency occurs and when an aircraft is fullycaught by a parachute is critical. The parachute may not fully inflateimmediately or quickly. The parachute may not slow the aircraft enoughto prevent the aircraft from being damaged upon landing.

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the invention are disclosed in the followingdetailed description and the accompanying drawings.

FIG. 1 is a diagram illustrating an embodiment of a distributedparachute system used in an aircraft.

FIG. 2A is a diagram illustrating an embodiment of parachute deploymentusing a distributed parachute system.

FIG. 2B is a diagram illustrating an embodiment of parachute deploymentusing a distributed parachute system.

FIG. 3A is a diagram illustrating an embodiment of a packed parachute.

FIG. 3B is a diagram illustrating an embodiment of a distributedparachute.

FIG. 4A is a diagram illustrating an embodiment of a packed parachute.

FIG. 4B is a diagram illustrating an embodiment of a packed parachuteduring deployment.

FIG. 4C is a diagram illustrating an embodiment of a packed parachuteafter deployment.

FIG. 4D is a diagram illustrating an embodiment of a cross section of adistributed parachute.

FIG. 4E is a diagram illustrating an embodiment of a distributedparachute.

FIG. 4F is a diagram illustrating an embodiment of a distributedparachute during deployment.

FIG. 4G is a diagram illustrating an embodiment of a distributedparachute after deployment.

FIG. 5A is a diagram illustrating an embodiment of a separatingmechanism of a distributed parachute system.

FIG. 5B is a diagram illustrating an embodiment of a separatingmechanism of a distributed parachute system in use.

FIG. 6 is a diagram illustrating an embodiment of a distributedparachute system comprising self-propelled projectiles.

FIG. 7A is a diagram illustrating an embodiment of a distributedparachute system comprising fall-away wings.

FIG. 7B is a diagram illustrating an embodiment of a distributedparachute system comprising fall-away wings.

FIG. 8 is a diagram illustrating an embodiment of a distributedparachute system used in a multicopter.

FIG. 9A is a diagram illustrating an embodiment of a distributedparachute stored in a boom.

FIG. 9B is a diagram illustrating an embodiment of a distributedparachute stored in a boom.

FIG. 10 is a diagram illustrating an embodiment of distributed parachutesystem used in an aircraft.

DETAILED DESCRIPTION

The invention can be implemented in numerous ways, including as aprocess; an apparatus; a system; a composition of matter; a computerprogram product embodied on a computer readable storage medium; and/or aprocessor, such as a processor configured to execute instructions storedon and/or provided by a memory coupled to the processor. In thisspecification, these implementations, or any other form that theinvention may take, may be referred to as techniques. In general, theorder of the steps of disclosed processes may be altered within thescope of the invention. Unless stated otherwise, a component such as aprocessor or a memory described as being configured to perform a taskmay be implemented as a general component that is temporarily configuredto perform the task at a given time or a specific component that ismanufactured to perform the task. As used herein, the term ‘processor’refers to one or more devices, circuits, and/or processing coresconfigured to process data, such as computer program instructions.

A detailed description of one or more embodiments of the invention isprovided below along with accompanying figures that illustrate theprinciples of the invention. The invention is described in connectionwith such embodiments, but the invention is not limited to anyembodiment. The scope of the invention is limited only by the claims andthe invention encompasses numerous alternatives, modifications andequivalents. Numerous specific details are set forth in the followingdescription in order to provide a thorough understanding of theinvention. These details are provided for the purpose of example and theinvention may be practiced according to the claims without some or allof these specific details. For the purpose of clarity, technicalmaterial that is known in the technical fields related to the inventionhas not been described in detail so that the invention is notunnecessarily obscured.

A distributed parachute system is disclosed. The system comprises aparachute at least partially deployed along one or more dimensions and adeployment mechanism configured to deploy the parachute. The distributedparachute system is configured to be deployed in an aircraft thatcomprises a channel oriented along the one or more dimensions. A portionof the aircraft may be removed or altered during parachute deployment.

A parachute in a distributed parachute system may be stored in a lesscompact manner than in traditional systems. Storing the parachute in adistributed fashion may allow the parachute to unfurl and inflatequickly, decreasing aircraft recovery time. A shape or configuration ofan aircraft may determine how many parachutes are used, storage locationof the one or more parachutes, or a method of parachute deployment.Multiple parachutes or multiple channels may be present in the system.In some embodiments, rockets or explosives are utilized to remove asection of the aircraft's frame and release the parachute.

FIG. 1 is a diagram illustrating an embodiment of a distributedparachute system used in an aircraft. In some embodiments, a distributedparachute that is stored entirely unpacked may result in the quickestdeployment times. The aircraft may be large enough such that theparachute stored as a disc within the aircraft. The parachute may bedeployed completely unpacked. However, aerodynamics of the aircraft andstructural considerations may constrain the size of an aircraft. Theparachute may be stored over a largest distributed area available. Theparachute may be distributed as semi-deployed as possible acrosssurfaces of the aircraft.

In the example shown, aircraft 100 comprises parachute 102. Parachute102 as shown is stored across a fuselage and two wings of aircraft 100.Parachute 102 may be stored in a channel that travels across the wingsand fuselage. In some embodiments, the channel is not level. The channelmay be formed based on the aircraft configuration. The channel mayfollow the shape of the aircraft in order to be non-obstructive toaerodynamics of the aircraft. The channel may be recessed. In someembodiments, the channel is a depression within the frame of theaircraft. In some embodiments, the channel may be attached atop anaircraft component, such as a wing. The channel may be covered.

The parachute may be installed and stowed in accordance withaerodynamic, utility, or structural constrictions of the aircraft. Forexample, the parachute may be stored in a concave shape around thefuselage of aircraft 100. The parachute may be fully expandedhorizontally as stored. Structural lines of the parachute may be storeddistributed throughout the aircraft.

FIG. 2A is a diagram illustrating an embodiment of parachute deploymentusing a distributed parachute system. In the example shown, parachute202 is in initial stages of deployment from aircraft 200. Parachute 202may show parachute 102 of FIG. 1A during initial deployment. Parachute202 as shown is deployed in a slender, roll-like shape. The parachutemay already be unpacked in the horizontal plane upon deployment,decreasing the amount of time until the parachute is fully unpacked.Decreasing a period of time until the parachute is fully filled mayallow the parachute to more effectively slow down the aircraft beforethe aircraft crashes.

FIG. 2B is a diagram illustrating an embodiment of parachute deploymentusing a distributed parachute system. FIG. 2B may show when the systemafter the parachute is deployed. In the example shown, parachute 202 isfully inflated. In some embodiments, one contiguous parachute is used.In some embodiments, multiple parachutes are used. The parachute may beattached to the aircraft using a bridle. The bridle may be attached tothe aircraft at structurally sound points. The parachute may be deployedin relation to a center of gravity of the aircraft based on a desiredlanding position. The parachute may be deployed using reactive gas,compressed gas, mortars, ballistic projectiles, pneumatic mechanisms, orany appropriate method.

FIG. 3A is a diagram illustrating an embodiment of a packed parachute.The figure shows a cross section of aircraft component 300. Aircraftcomponent 300 may comprise a fuselage, wing, or other part of anaircraft. As shown, parachute 302 is stored compactly in aircraftcomponent 300. The parachute may be stored in a container.

FIG. 3B is a diagram illustrating an embodiment of a distributedparachute. The figure shows a cross section of aircraft component 352.In contrast to parachute 302 of FIG. 3A, parachute 352 is stored spreadout over the aircraft component. Tethers of the parachute may be storedfolded or tied to prevent tangling. The parachute as shown utilizes thelength of aircraft component 350.

The distributed parachute may be stored in a container or bag thatprotects it from snagging on the aircraft. The parachute may be deployedinside the container initially before the container breaks off. Forexample, the container may be a sack that rips open. The container mayfit around the distributed parachute throughout the aircraft. Parachute352 may be stored in a compartment of aircraft component 350. Thecompartment may be isolated from the rest of the component to preventthe parachute from coming into contact with wiring, a flight computer, astructural frame, or any other appropriate part of the aircraft. Thecompartment may be outfitted with heat-insulating material. Thecompartment may comprise smooth surfaces. The compartment may be arectangular prism.

Parachute 352 may be stored in a compartment or portion of aircraftcomponent 350 that is configured to be removed without obstruction ofthe parachute in the event of deployment. In some embodiments, a portionof the aircraft directly covering the parachute is configured to beblasted through easily. The portion may be made with a weaker or thinnermaterial. The aircraft may have include a panel that ejects whenpressure exerted on it reaches a predetermined threshold. The panels maybe attached with a weak adhesive. The panel may be hinged. The portionof the aircraft may be designed to be removed without comprisingstructural integrity of the rest of the aircraft or harming a humanresiding in the aircraft.

FIG. 4A is a diagram illustrating an embodiment of a packed parachute.The parachute shown may be used in traditional parachute deploymentsystems. Parachute 402 as shown is folded in on itself in container 400.The parachute may be rolled into a thin tube and the tube is then foldedand packed. The tube may be stored in a coiled formation. Container 400may be pressure packed.

FIG. 4B is a diagram illustrating an embodiment of a packed parachuteduring deployment. As shown, parachute 402 has been unpacked vertically.Unpacking the parachute in a vertical direction may take a significantportion of the deployment time. Deploying a traditionally packedparachute may comprise a step of unpacking the parachute in onedimension, wherein a distributed parachute is already stored mostlyunpacked in one dimension.

FIG. 4C is a diagram illustrating an embodiment of a packed parachuteafter deployment. In the example shown, parachute 402 has been filled. Atotal deployment time of a traditionally packed parachute may besignificantly longer than that of a distributed parachute.

FIG. 4D is a diagram illustrating an embodiment of a cross section of adistributed parachute. In some embodiments, the parachute is storedfully unpacked in one dimension. The parachute may be folded or packedin another dimension in order to fit in an available storage space inthe aircraft. As shown, parachute 404 is folded accordion-style. In someembodiments, the parachute is not be folded in a direction perpendicularto the accordion-style folds.

FIG. 4E is a diagram illustrating an embodiment of a distributedparachute. In the example shown, parachute 450 is not packed in ahorizontal direction. The parachute may be rolled, folded, scrunched, orpacked in any appropriate manner. By storing the parachute unpacked ormostly unpacked in one dimension, the parachute may open faster than atraditionally packed parachute. Storing the parachute distributedthroughout the aircraft may eliminate a deployment step required fortraditionally packed parachutes shown in FIG. 4B.

FIG. 4F is a diagram illustrating an embodiment of a distributedparachute during deployment. In the example shown, parachute 450 hasbeen deployed and is beginning to inflate. The air may begin to inflatethe parachute from an oblong shape to a disc shape. Subsequently, theparachute may billow into its fully deployed shape.

FIG. 4G is a diagram illustrating an embodiment of a distributedparachute after deployment. In the example shown, parachute 450 is fullyexpanded. A parachute of a distributed parachute deployment system mayreach full deployment quickly.

FIG. 5A is a diagram illustrating an embodiment of a separatingmechanism of a distributed parachute system. A separating mechanism maybe used to remove a portion of the aircraft in order to expose theparachute. The separating mechanism may include a projectile, anexplosive, a reactive gas, a mechanical trigger, electrical trigger, orany other appropriate mechanism. The portion of the aircraft removed mayvary based upon structural design of the aircraft. In some embodiments,the removed portion is a significant percentage of the aircraft. Onehalf of large, dominating features of the aircraft may be removed.Aircraft components such as wings or fuselage may be constructed bymolding two halves and joining them together. The parachute may bestored in between the two halves of the aircraft component. One half ofthe aircraft component may be blown away or removed during parachutedeployment, revealing the parachute.

In the example shown, parachute 506 is stored throughout the length ofwing 500. Near the tip of wing 500, explosive 504 is positioned inbetween two halves of wing 500. The two halves may be conjoined withadhesives. A seam may be present between the two halves. The two halvesmay separate at the seam when a predetermined threshold of pressure isexerted upon the halves. In the example shown, explosive 504 is storedin between the two halves of wing 500. The explosives may be triggeredelectronically or mechanically. The explosives may be controlledautomatically based on flight conditions of the aircraft.

FIG. 5B is a diagram illustrating an embodiment of a separatingmechanism of a distributed parachute system in use. In the exampleshown, explosive 512 has been triggered. In the example shown, twoshielding components are positioned on either side of explosive 512.Shielding components 510 and 514 may prevent the explosive from exertingpressure to the left and right. They may constrain explosive 512'saffect to upwards and downwards directions, causing the wing to split inhalves into wing section 506 and wing section 508. Explosive 512 may bedesigned to prevent unplanned damage to the aircraft. For example, wingsection 508's connection to a fuselage may be unaffected. In someembodiments, wing section 506 may be tethered to the fuselage or wingsection 508 such that it hangs below the aircraft after being blown off.Discarded components may be tethered to a frame of the aircraft as toavoid causing harm as they fall to ground. Explosive 512 may be strongenough to completely blow wing section 506 away from atop wing section508 quickly.

In some embodiments, a deployment aid is used to deploy parachute 506away from the aircraft quickly once it is exposed. For example, aprojectile may be used.

FIG. 6 is a diagram illustrating an embodiment of a distributedparachute system comprising self-propelled projectiles. Various methodsmay be used to remove portions of the aircraft during parachutedeployment. In the example shown, tether 606 is strung along a perimeterof one wing of aircraft 600. One end of tether 606 is attached to rocket602 and its other end is attached to rocket 604. Tether 606 may be inbetween a top and bottom section of the wing. During parachutedeployment, the rockets may lift the top section of the wing off ofaircraft 600. The rockets may fly away from aircraft 600 and carry thetop section with them. The top section of the wing may be tethered to afuselage of the aircraft and hang below the aircraft after beingremoved. A parachute may be stored in between the top section and bottomsection of the wing. In some embodiments, a portion of the fuselage ortail is removed in order to expose the parachute.

FIG. 7A is a diagram illustrating an embodiment of a distributedparachute system comprising fall-away wings. In some embodiments,portions of the aircraft are sacrificial. They may be blown off orremoved during parachute deployment. In the example shown, wings 702 and712 break away from aircraft 700 during deployment. Parachutes 706 and708 were stored distributed throughout wings 702 and 712 respectively.The wings may be detached using ballistic, explosive, or chemicalmethods. The wings may be blasted away from a fuselage of the aircraft.In the example shown, wing 702 is attached to parachute 706 via tether704. Wing 712 is attached to parachute 708 via tether 710. Sacrificialelements of the aircraft may be attached to a parachute or the fuselagein order to prevent free fall and possible harm.

FIG. 7B is a diagram illustrating an embodiment of a distributedparachute system comprising fall-away wings. In the example shown,parachutes 706 and 708 have fully expanded. The parachutes are attachedto the fuselage of aircraft 700. The distributed parachute system mayinclude multiple parachutes. The multiple parachutes may be attached toa shared point on the aircraft. They may bump against each other whenthey are fully deployed. In some embodiments, multiple parachutes areattached to different points on the aircraft. For example, a parachutemay be stored in a tail of the aircraft and attached to the tail.

In the example shown, discarded wings 702 and 712 hang from parachutes706 and 708. The wings may be composed of lightweight material. Thewings may be hollow.

FIG. 8 is a diagram illustrating an embodiment of a distributedparachute system used in a multicopter. A distributed parachute systemmay be used in aircraft of varying shapes, sizes, and configurations. Inthe example shown, multicopter 800 comprises eight rotors spaced arounda fuselage. Rotors 802, 804, 806, 808, 810, 812, 814, and 816 areattached to the fuselage via a network of booms. To the left of thefuselage, parachute 818 is spread throughout boom section 820. Parachute818 is distributed throughout an irregular shape to utilize the spaceavailable in boom section 820. The parachute may be stored as unpackedas possible based on aircraft constrictions. Parachute 822 is stored tothe right of the fuselage in boom section 824.

FIG. 9A is a diagram illustrating an embodiment of a distributedparachute stored in a boom. The example shows a cross section of a boom.In the example shown, parachute 904 is stored within section 902 of boom900. Section 902 follows the curve of boom 900 and is located at the topof the boom. The section confines the parachute to a small percentage ofthe boom. Section 902 may be configured to open when parachute 904 isdeployed. The section may comprise hinges, a door, or a panel.

FIG. 9B is a diagram illustrating an embodiment of a distributedparachute stored in a boom. In the example shown, the boom 950 ishollow. Parachute 954 is stored within boom 950. Explosives 952 and 956are located halfway in between a top half and bottom half of the boom.Explosives 952 and 956 may be engaged to split boom 950 in half,revealing parachute 954. The bottom half of the boom may remain attachedto a fuselage.

FIG. 10 is a diagram illustrating an embodiment of distributed parachutesystem used in an aircraft. The aircraft shown has an unconventionalshape. Fuselage 1000 is pear-shaped and is positioned in the front ofthe aircraft. Main aircraft frame 1004 is roughly rectangular in shapeand has a large hollow in the middle of the frame. Parachute 1002 asshown is distributed throughout the irregularly shaped frame. Theparachute snakes around the crevices of the frame. A distributedparachute system may take advantage of vastly differing aircraft frames.

Although the foregoing embodiments have been described in some detailfor purposes of clarity of understanding, the invention is not limitedto the details provided. There are many alternative ways of implementingthe invention. The disclosed embodiments are illustrative and notrestrictive.

What is claimed is:
 1. A distributed parachute system, comprising: aparachute at least partially deployed along one or more dimensions, anda deployment mechanism configured to deploy the parachute, wherein thedistributed parachute system is configured to be deployed in an aircraftthat comprises a channel oriented along the one or more dimensions,wherein a tether around a perimeter of a wing of the aircraft in betweena top section and a bottom section of the wing is attached to aprojectile configured to remove the top section of the wing.
 2. Thesystem of claim 1, wherein the channel is recessed.
 3. The system ofclaim 1, wherein the parachute is fully unpacked in one dimension. 4.The system of claim 1, wherein the parachute is fully unpacked in onedimension and is folded in a perpendicular dimension.
 5. The system ofclaim 1, wherein the parachute is stored in an oblong shape.
 6. Thesystem of claim 1, wherein the parachute is stored in an irregular shapebased on the aircraft.
 7. The system of claim 1, comprising one or moreadditional parachutes stored in the channel or stored in one or moreadditional channels.
 8. The system of claim 1, wherein a portion of theaircraft positioned over the parachute is removed during parachutedeployment.
 9. The system of claim 8, wherein the portion of theaircraft comprises a hinge, a panel, an adhesive, or a structurally weakmaterial.
 10. The system of claim 8, wherein the portion of the aircraftis tethered to a remaining portion of the aircraft or the parachute. 11.The system of claim 1, wherein a separating mechanism is used to removea portion of the aircraft during parachute deployment.
 12. The system ofclaim 11, wherein the separating mechanism comprises a projectile, anexplosive, a reactive gas, a mechanical trigger, or an electricaltrigger.
 13. The system of 1, wherein the channel comprises a hollowbetween a top section and a bottom section of a component of theaircraft.
 14. The system of claim 1, wherein an explosive is used toblow off a top section of a component of the aircraft during parachutedeployment.
 15. The system of claim 1, wherein the parachute is storedwithin a wing of the aircraft and the wing is configured to travel awayfrom a fuselage of the aircraft during parachute deployment.
 16. Thesystem of claim 1, wherein the parachute is stored in a boom of theaircraft.
 17. The system of claim 1, comprising multiple parachutes thattethered to the aircraft at a shared location.
 18. The system of claim1, comprising multiple parachutes that tethered to the aircraft atdifferent locations.